- tabida Reeve, 1860 = Myochama anomioides (family Myochamidae)

- tabulata Menke, 1843 = Cabestana tabulata (family Ranellidae – Cymatiinae)

- taeniata Tenison Woods, 1877 (in part) = Austrocochlea brevis (family Trochidae – Trochinae)

- taeniata Tenison Woods, 1878 = Austrodrillia beraudiana (family Turridae – Crassispirinae)

- taeniatus Quoy & Gaimard, 1834 = Austrocochlea porcata (family Trochidae – Trochinae)

- talienwhanensis Crosse, 1862 = Crassostrea gigas (family Ostreidae – Crassostreinae)

- targotegulatus Salvini-Plawen, 1992 = Lepoderma chiastos (family Chaetodermatidae)

- tarka Burn, 1969 = Sclerodoris tarka (family Discodorididae)

- taronga Allan, 1933 = Philinopsis taronga (family Aglajidae)

- tasmaniae Sowerby, 1866 = Macroschisma tasmaniae (family Fissurellidae – Fissurellinae)

- tasmanica lilacina Verco, 1909 = Isotriphora amethystina (family Triphoridae – Triphorinae)

- tasmanica Ashby, 1920 = Plaxiphora matthewsi (family Mopaliidae)

- tasmanica Beddome, 1882 = Gaimardia tasmanica (family Cyamiidae)

- tasmanica Beddome, 1883 = Diaphana tasmanica (family Diaphanidae – Diaphaninae)

- tasmanica Beddome, 1883 = Zeidora legrandi (family Fissurellidae – Emarginulinae)

- tasmanica Hedley & May, 1914 = Parilimya tasmanica (family Parilimyidae)

- tasmanica Hedley, 1900 = Zeidora lodderae (family Fissurellidae – Emarginulinae)

- tasmanica Iredale & Hull, 1925 = Notoplax costata (family Acanthochitonidae – Acanthochitoninae)

- tasmanica May, 1911 = Epidirella tasmanica (family Turridae – Turrinae)

- tasmanica May, 1915 = Verticordia tasmanica (family Verticordiidae)

- tasmanica May, 1919 = Cocculinella tasmanica (family Cocculinellidae)

- tasmanica Petterd, 1879 = Nanula tasmanica (family Trochidae – Trochinae)

- tasmanica Pfeffer, 1884 = Euprymna tasmanica (family Sepiadariidae – Sepiolinae)

- tasmanica Pilsbry, 1895 = Propilidium tasmanicum (family Lepetidae – Propilidiinae)

- tasmanica Reeve, 1849 = Gazameda tasmanica (family Turritellidae – Turritellinae)

- tasmanica Reeve, 1858 = Vulsella spongiarum (family Malleidae)

- tasmanica Reeve, 1863 = Laternula rostrata (family Laternulidae)

- tasmanica Reeve, 1864 = Tawera gallinula (family Veneridae – Chioninae)

- tasmanica Rudman, 1990 = Cadlina tasmanica (family Chromodorididae)

- tasmanica Salvini-Plawen, 1988 = Tegulaherpia tasmanica (family Lepidomeniidae)

- tasmanica Tate & May, 1900 = Polinices controversa (family Naticidae – Naticinae)

- tasmanica Tenison Woods = Cryptassiminea tasmanica (family Assimineidae – Assimineinae)

- tasmanica Tenison Woods, 1875 = Isotriphora tasmanica (family Triphoridae – Triphorinae)

- tasmanica Tenison Woods, 1875 = Munditia tasmanica (family Liotiidae – Liotiinae)

- tasmanica Tenison Woods, 1875 = Myllita tasmanica (family Galeommatidae)

- tasmanica Tenison Woods, 1875 = Mytilus galloprovincialis planulatus (family Mytilidae)

- tasmanica Tenison Woods, 1875 = Turbonilla tasmanica (family Pyramidellidae – Turbonillinae)

- tasmanica Tenison Woods, 1876 = Amalda marginata (family Olividae – Ancillariinae)

- tasmanica Tenison Woods, 1876 = Aplysia sydneyensis (family Aplysiidae – Aplysiinae)

- tasmanica Tenison Woods, 1876 = Asperdaphne tasmanica (family Conidae – Rhaphitominae)

- tasmanica Tenison Woods, 1876 = Atrina tasmanica (family Pinnidae)

- tasmanica Tenison Woods, 1876 = Austroginella tasmanica (family Marginellidae – Marginellinae)

- tasmanica Tenison Woods, 1876 = Austromitra tasmanica (family Costellariidae)

- tasmanica Tenison Woods, 1876 = Cancellaria purpuriformis (family Cancellariidae – Cancellariinae)

- tasmanica Tenison Woods, 1876 = Cardita excavata (family Carditidae)

- tasmanica Tenison Woods, 1876 = Colubraria bednalli (family Colubrariidae)

- tasmanica Tenison Woods, 1876 = Diplodonta tasmanica (family Ungulinidae)

- tasmanica Tenison Woods, 1876 = Gastrochaena tasmanica (family Gastrochaenidae)

- tasmanica Tenison Woods, 1876 = Myadora rotundata (family Myochamidae)

- tasmanica Tenison Woods, 1876 = Myochama tasmanica (family Myochamidae)

- tasmanica Tenison Woods, 1876 = Nassarius nigellus (family Nassariidae – Nassariinae)

- tasmanica Tenison Woods, 1876 = Neverita aulacoglossa (family Naticidae – Naticinae)

- tasmanica Tenison Woods, 1876 = Paphies cuneata (family Mesodesmatidae – Mesodesmatinae)

- tasmanica Tenison Woods, 1876 = Pisinna tasmanica (family Anabathridae)

- tasmanica Tenison Woods, 1876 = Pseudoneaera tasmanica (family Cuspidariidae)

- tasmanica Tenison Woods, 1876 = Scutellastra peronii (family Patellidae)

- tasmanica Tenison Woods, 1876 = Siphonaria tasmanica (family Siphonariidae)

- tasmanica Tenison Woods, 1877 = Astralium aureum (family Turbinidae – Turbininae)

- tasmanica Tenison Woods, 1877 = Ethminolia vitiliginea (family Trochidae – Umboniinae)

- tasmanica Tenison Woods, 1877 = Hinemoa tasmanica (family Pyramidellidae – Pyramidellinae)

- tasmanica Tenison Woods, 1877 = Liostomia tasmanica (family Pyramidellidae – Odostomiinae)

- tasmanica Tenison Woods, 1877 = Odostomia tasmanica (family Pyramidellidae – Odostomiinae)

- tasmanica Tenison Woods, 1877 = Puposyrnola tasmanica (family Pyramidellidae – Pyramidellinae)

- tasmanica Tenison Woods, 1877 = Truncatella scalarina (family Truncatellidae – Truncatellinae)

- tasmanica Tenison Woods, 1877 = Tugali parmophoidea (family Fissurellidae – Emarginulinae)

- tasmanica Tenison Woods, 1878 = Cominella tasmanica (family Buccinidae – Buccininae)

- tasmanicum Pilsbry, 1895 = Propilidium tasmanicum (family Lepetidae – Propilidiinae)

- tasmanicus A. Adams & Angas, 1863 = Notochlamys hexactes (family Pectinidae – Chlamydinae)

- tasmanicus Tenison Woods, 1876 = Conus rutilus (family Conidae – Coninae)

- tasmanicus Tenison Woods, 1876 = Guraleus tasmanicus (family Conidae – Mangeliinae)

- tasmanicus Tenison Woods, 1876 = Herpetopoma scabriuscula (family Trochidae – Eucyclinae)

- tasmaniensis A. Adams & Angas, 1864 = Penion mandarinus (family Buccinidae – Siphonaliinae)

- tasmaniensis Bergh, 1905 = Chromodoris tasmaniensis (family Chromodorididae)

- tasmantis Laseron, 1951 = Domiporta strangei (family Mitridae – Mitrinae)

- tateanus Bednall, 1897 = Ischnochiton carinulatus (family Ischnochitonidae – Ischnochitoninae)

- tatei Angas, 1879 = Austromitra analogica (family Costellariidae)

- tatei Angas, 1879 = Epicodakia tatei (family Lucinidae)

- tatei Gatliff, 1905 = Leuconopsis pellucidus (family Ellobiidae – Pedipedinae)

- tatei Hedley, 1901 = Cosa tatei (family Philobryidae)

- tatei Thiele, 1930 = Alvania strangei (family Rissoidae – Rissoinae)

- tatei Torr & Ashby, 1898 = Acanthochitona granostriata (family Acanthochitonidae – Acanthochitoninae)

- tayloriana Reeve, 1859 = Mitrella tayloriana (family Columbellidae – Atiliinae)

- taylorianus Reeve, 1847 = Microcolus dunkeri (family Fasciolariidae – Fasciolariinae)

- tecta Golding, Ponder & Byrne, 2007 = Salinator tecta (family Amphibolidae)

- telebathia Hedley, 1911 = Danilia telebathia (family Trochidae – Eucyclinae)

- telescopialis Verco, 1896 = Exomilus telescopialis (family Conidae – Rhaphitominae)

- tellinaeformis Hedley, 1901 = Sarepta tellinaeformis (family Sareptidae)

- tellinaeformis Reeve, 1857 = Gari livida (family Psammobiidae)

- temperata Cotton & Godfrey, 1938 = Gari modesta (family Psammobiidae)

- tenebrica Reeve, 1859 = Mitrella leucostoma (family Columbellidae – Atiliinae)

- tenellum Hutton, 1885 = Epitonium tenellum (family Epitoniidae)

- tenellus Reeve, 1856 = Spondylus tenellus (family Spondylidae)

- tenera A. Adams, 1850 = Haminoea maugeansis (family Haminoeidae – Haminoeinae)

- tenisoni Pritchard, 1896 = Ennucula obliqua (family Nuculidae)

- tenisoni Pritchard, 1900 = Ovaginella ovulum (family Marginellidae – Marginellinae)

- tenisoni Tate, 1899 = Lironoba australis (family Rissoidae – Rissoinae)

- tenisoni Tenison Woods, 1878 = Limopsis tenisoni (family Limopsidae)

- tenisoni Tryon, 1883 = Anachis interrupta (family Columbellidae – Atiliinae)

- tenisoni Tryon, 1886 = Melanella tenisoni (family Eulimidae)

- tenuicostata Lamarck, 1819 = Fulvia tenuicostata (family Cardiidae – Laevicardiinae)

- tenuicostata Tenison Woods, 1877 = Fax tenuicostata (family Buccinidae – Buccininae)

- tenuis Gaskoin, 1851 = Mitrella tenuis (family Columbellidae – Atiliinae)

- tenuissima Sowerby, 1868 = Bulla quoyii (family Bullidae)

- terebellata Tate, 1893 = Colpospira australis (family Turritellidae – Turritellinae)

- teres Hedley, 1902 = Philine teres (family Philinidae)

- teresiae Tenison Woods, 1876 = Austromitra analogica (family Costellariidae)

- terrareginae Iredale, 1929 = Solemya australis (family Solemyidae)

- tesselata Tenison Woods, 1878 = Cantharidella tiberiana (family Trochidae – Trochinae)

- tessellata Tenison Woods, 1876 = Alaba monile (family Litiopidae)

- tetricus Gould, 1852 = Octopus tetricus (family Octopodidae)

- textilosa Lamarck, 1816 = Dicathais orbita (family Muricidae – Rapaninae)

- thaanumi Pilsbry, 1917 = Tricolia variabilis (family Phasianellidae – Tricoliinae)

- thackwayi Iredale, 1931 = Glycymeris striatularis (family Glycymerididae)

- thetidis Hedley, 1902 = Parvamussium thetidis (family Propeamussiidae)

- thetidis Hedley, 1902 = Pratulum thetidis (family Cardiidae – Protocardiinae)

- thetidis Hedley, 1903 = Cylichna thetidis (family Cylichnidae)

- thomsoni Brazier, 1875 = Semicassis thomsoni (family Tonnidae – Phaliinae)

- thouinensis May, 1915 = Alvania thouinensis (family Rissoidae – Rissoinae)

- thouinensis May, 1916 = Cystiscus thouinensis (family Cystiscidae – Cystiscinae)

- tiara May, 1911 = Turbonilla tiara (family Pyramidellidae – Turbonillinae)

- tiara May, 1915 = Onoba tiara (family Rissoidae – Rissoinae)

- tiberiana Crosse, 1863 = Cantharidella tiberiana (family Trochidae – Trochinae)

- tignum Colman, 1958 = Dentalium hemileuron (family Dentaliidae)

- tincta Angas, 1871 = Syrnola tincta (family Pyramidellidae – Syrnolinae)

- tomentosa Quoy & Gaimard, 1835 = Calyptraea calyptraeformis (family Calyptraeidae)

- tomlinianus May, 1917 = Cystiscus tomlinianus (family Cystiscidae – Cystiscinae)

- topaziaca Hedley, 1908 = Nozeba topaziaca (family Iravadiidae)

- topazica Laseron, 1954 = Tetraphora granifera (family Triphoridae – Triphorinae)

- torcularis Tenison Woods, 1878 = Icuncula torcularis (family Capulidae)

- torquata Hedley, 1922 = Epidirona torquata (family Turridae – Crassispirinae)

- torri Cotton & Godfrey, 1934 = Austrocochlea constricta (family Trochidae – Trochinae)

- torri Iredale & May, 1916 = Ischnochiton torri (family Ischnochitonidae – Ischnochitoninae)

- trailli Pritchard & Gatliff, 1906 = Vexitomina coxi (family Turridae – Crassispirinae)

- tramoserica Holten, 1802 = Cellana tramoserica (family Nacellidae)

- translucida Garrard, 1972 = Colpospira translucida (family Turritellidae – Turritellinae)

- translucida Gatliff, 1906 = Cirsotrema translucida (family Epitoniidae)

- translucida Hedley, 1905 = Alaba translucida (family Litiopidae)

- translucida May, 1915 = Acremodontina translucida (family Ataphridae)

- translucida Sowerby, 1846 = Mesoginella translucida (family Marginellidae – Marginellinae)

- trapezia Deshayes, 1840 = Anadara trapezia (family Arcidae – Anadarinae)

- treba Iredale, 1954 = Sepia braggi (family Sepiidae)

- trenberthae Trenberth, 1961 = Notocypraea comptoni (family Cypraeidae – Pustulariinae)

- triangulus May, 1915 = Amphithalamus triangulus (family Anabathridae)

- tricarinata Tenison Woods, 1878 = Filodrillia tricarinata (family Conidae – Clathurellinae)

- tricolor Laseron, 1954 = Eutriphora tricolor (family Triphoridae – Triphorinae)

- tricostalis Pilsbry, 1894 = Rhyssoplax tricostalis (family Chitonidae – Chitoninae)

- tridentata Tate, 1878 = Hydroginella tridentata (family Marginellidae – Marginellinae)

- trifoliata Hedley, 1906 = Austrocardiella trifoliata (family Condylocardiidae – Condylocardiinae)

- triformis Reeve, 1845 = Pterochelus triformis (family Muricidae – Muricinae)

- triggi Cotton & Godfrey, 1938 = Myadora brevis (family Myochamidae)

- trigonale Tate, 1879 = Lepton trigonale (family Galeommatidae)

- trigonella Lamarck, 1818 = Spisula trigonella (family Mactridae – Mactrinae)

- trigonopsis Hutton, 1877 = Anomia trigonopsis (family Anomiidae – Anomiinae)

- trilineata Adams & Angas, 1864 = Parviterebra trilineata (family Columbellidae – Atiliinae)

- triquetra Hanley, 1843 = Anapella cycladea (family Mesodesmatidae – Davilinae)

- trisculpta May, 1912 = Socienna trisculpta (family Newtoniellidae – Eumetulinae)

- triseriata Verco, 1909 = Nepotilla triseriata (family Conidae – Rhaphitominae)

- trispinosa Blainville, 1821 = Diacria trispinosa (family Cavoliniidae – Cavoliniinae)

- tristis Deshayes, 1854 = Macomona deltoidalis (family Tellinidae – Tellininae)

- tristis Deshayes, 1859 = Terebra tristis (family Terebridae – Terebrinae)

- tristriata Tenison Woods, 1877 = Cingulina spina (family Pyramidellidae – Turbonillinae)

- triticea Duclos, 1835 = Belloliva triticea (family Olivellidae)

- tritoniformis Blainville, 1832 = Agnewia tritoniformis (family Muricidae – Rapaninae)

- trochiformis Schepman, 1909 = Fluxinella trochiformis (family Seguenziidae)

- trochlea Wood, 1828 = Austrocochlea constricta (family Trochidae – Trochinae)

- tropicalis Iredale, 1929 = Lima nimbifer (family Limidae)

- tryoni Tate & May, 1900 = Melanella tryoni (family Eulimidae)

- tuberculata Rafinesque, 1814 = Ocythoe tuberculata (family Ocythoidae)

- tubulus Dunker, 1871 = Ataxocerithium serotinum (family Newtoniellidae – Ataxocerithiinae)

- tumida Laseron, 1954 = Brookula angeli (family Turbinidae – Skeneinae)

- tumida Tenison Woods, 1876 = Pisinna tumida (family Anabathridae)

- tumidum Dunker, 1862 = Argobuccinum pustulosum (family Ranellidae – Ranellinae)

- tumidus Burn, 1978 = Nipponatys tumidus (family Haminoeidae – Atydinae)

- tumidus Petterd, 1884 = Favartia brazieri (family Muricidae – Muricopsinae)

- turbinata Laseron, 1954 = Brookula crebresculpta (family Turbinidae – Skeneinae)

- turbinata Petterd, 1889 = Ascorhis victoriae (family Hydrobiidae – Hydrobiinae)

- turbinata Sowerby, 1846 = Mesoginella turbinata (family Marginellidae – Marginellinae)

- turbinatus Gatliff & Gabriel, 1909 = Larinopsis turbinatus (family Planaxidae – Fossarinae)

- turbonilloides Tenison Woods, 1879 = Specula turbonilloides (family Cerithiopsidae – Cerithiopsinae)

- turrita Petterd, 1884 = Koloonella turrita (family Pyramidellidae – Unplaced)

- turrita Tenison Woods, 1876 = Tasmeuthria clarkei (family Buccinidae – Buccininae)

- turritella Quoy & Gaimard, 1834 = Zeacumantus diemenensis (family Batillariidae)

- turritelliformis Angas, 1877 = Seilarex turritelliformis (family Triphoridae – Metaxiinae)

- turritus Iredale, 1940 = Siphonaria tasmanica (family Siphonariidae)

- typica Dunker, 1856 = Agnewia tritoniformis (family Muricidae – Rapaninae)

- typica Gatliff & Gabriel, 1911 = Edenttellina typica (family Juliidae – Bertheliniinae)

- typicus Hedley, 1903 = Fascinus typicus (family Fasciolariidae – Fasciolariinae)